Abstract
Korea has not dealt with proof in middle school geometry since the 2009 revision of the curriculum. In this study, we propose to reintroduce proof in the new curriculum in Korea, and examine the contents and methods of proof education in the geometry domain of the Japanese and IB (International Baccalaureate) middle school mathematics curriculum, and based on this, we would like to suggest implications for proof education. To this end, in order to diagnose the current status of proof education in Korea, the introduction period of proof and related terms were analyzed by curriculum period. Next, we looked at the 2017 revised middle school mathematics curriculum in Japan, which has a similar academic system, curriculum, and educational environment to Korea, and the proof of the middle school mathematics textbook first published in 2021 based on this curriculum. In addition, we looked at how proof is handled in the IB (International Baccalaureate) mathematics curriculum and textbook, which is an internationally accredited curriculum. By summarizing these, implications for how to develop proof education in Korea
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